5.7 starts then dies immediately

My 08 tundra 5.7 starts then dies immediately. I can get a jump then it will stay running.any ideas? I put a new battery in but it still did it. It is an intermittent problem. It seems like there isnt enough voltage to keep the engine firing?

 

Alternator or voltage regulator are my guesses since you already replaced the battery. However, both would drain the battery eventually.
Interested to see what it ends up being.
Hang in there!

 

How many miles on the alternator?

Where do you live?

 

Why two threads? https://www.tundras.com/threads/2008-tundra-5-7-starts-then-dies.65866/

if yours disappears from the main page, you can go in once per day and add a post to “bump” it back to the main page. Best to do it when the forum is busy. Good luck!